PISTON KIT SET/4 R1, FZR, RX1, WOSSNER K8840DA-4 YAMAHA
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Delivery to United States 5–8 business days
This Wossner piston kit features a set of 4 forged pistons with a standard 74.00mm bore (actual piston diameter 73.95mm). The elliptical profile ensures uniform thrust load distribution and thermal control, designed for efficient combustion heat transfer. Manufactured in Germany, this kit is for 1000cc-class engines with a stroke of 58.00mm, clearance of 0.05mm, and a Wossner compression ratio of 10.20:1. The dome volume is -2.60cm³, and the compression height is 22.80mm. Key specifications include part number K8840DA-4. Cross-reference OEM part numbers for the clip are CW17, piston pin WP083, and replacement ring set 740XDS. The kit has a weight of 1380 grams.
- SKU
- 56-W9900.000.WO
- Brand
- Wossner
- Availability
- Out of Stock
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- Variant Id
- 259113
FULL DESCRIPTION
Wossner Piston Kit Set for Yamaha R1, FZR, RX1
Upgrade your high-performance motorcycle engine with this premium Wossner Piston Kit. Designed for precision and durability, this set of four forged pistons is engineered to meet the demands of powerful 1000cc-class engines.
Key Features:
- Set of 4 forged Wossner pistons for superior strength and performance.
- Standard bore size of 74.00mm, with an actual piston diameter of 73.95mm.
- Elliptical piston profile ensures uniform thrust load distribution and optimal thermal control, reducing stress and extending lifespan.
- Engineered for efficient combustion heat transfer, contributing to improved engine efficiency.
- Manufactured in Germany to exacting standards for reliability and precise fitment.
Specifications:
- Part Number: K8840DA-4
- Bore Size: 74.00mm (actual piston size 73.95mm)
- Engine Displacement: 1000cc
- Wossner Compression Ratio: 10.20:1
- OEM Compression Ratio: 11.80:1
- Dome Volume: -2.60cm³
- Compression Height: 22.80mm
- Piston Pin: WP083
- Replacement Ring Set: 740XDS
- Clip: CW17
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